.... Hawking has written many essays involving the unified theory, which is a theory summarizing the entire of the physical world; a theory that would stand as a complete, consistent theory of the physical interactions that would describe all possible observations. Our attempts at modeling physical reality normally consists of two parts: a) A set of local laws that are obeyed by the various physical quantities, formulated in terms of differential equations, and b) Sets of boundary conditions that tell us the state of some regions of the universe at a certain time and what effects propag .....

.... that belong to a group called retroviruses. The virus became known as HIV-1. In 1985, scientists in France identified another closely related virus that produces AIDS. This such virus became known as HIV-2 and occurs mainly just in Africa. The virus,HIV-1 is spread throughout the world . HIV infects certain white blood cells, including T-helper cells and macrophages, that play key roles in the functioning of the human immune system. The virus attaches to certain molecules found only on the surface of cells. When an AIDS virus enters one of these cells, the virus inserts its genes .....

.... not had time to collect sediment. Life on the rocky shores is separated into distinct zones that reflect the length of time each is exposed. At the highest point on the rocks is the black zone, marked by blue-green algae. This transition area between land and the marine environment is flooded only during the high spring tides. The algae, enclosed in gelatinous sheaths to resist drying, are grazed on by periwinkles, which are protected under tightly sealed, conical shells. Below the black zone lies the white zone, where barnacles are tightly glued to rocks. Living among the barnacles are .....

.... from each other by differences in thickness, the size of the grains, or color. All rock disintegrate slowly as a result of mechanical weathering and chemical weathering. Mechanical weathering is the breakdown of rock into particles without producing changes in the chemical composition of the minerals in the rock. Ice is the most important agent of mechanical weathering. Water percolates into cracks and fissures within the rock, freezes, and expands. The force exerted by the expansion is sufficient to widen cracks and break off pieces of rock. Heating and cooling of the rock, and the resul .....

.... come into play. The term “ectopic” literally means “out of place”. Other things in the human body can also be considered ectopic if it sits in an abnormal position in the body. A heart beat that originates from and unusual part of the heart is an “ectopic” heart beat, and a baby that is not properly nestled in the uterine cavity is an “ectopic” pregnancy. In an ectopic pregnancy the baby can be found in various different locations. The most common is in the end of the fallopian tube. It can also settle and embed itself onto the ovary, inside the cervix, or, rarely, in th .....

.... of law, freedom from cruel, inhumane or degrading punishments and the right to a fair trial by a competent and independent court · freedom to enjoy lawfully acquired property · equality of opportunity (including freedom from discrimination) · freedom of assembly and association (including public meeting and withdrawal of labour) · freedom of thought, conscience and religion freedom to contract · freedom to engage in a trade, profession or occupation freedom of movement within a nation and across national borders Ethnic rights Nations with multi-linguistic, multi-cultural, multi-r .....

.... into constructing one. When one thinks about what an asteroid could do to our planet it is usually a very scary thought. In the past we have been very lucky with where asteroids have hit our earth. Back in 1908 in the Tunguska region of Siberia, an object from space hit there causing miles of forest to be devastated. If that same object had hit New York, it would have probably been like a 20 megaton bomb going off in Times Square. That would have completely altered history. What makes it worse is that it is thought that a small comet hit in Tunguska. What if a huge comet had hit ther .....

.... such as fluorescent lamps, and mercury batteries. Mercury is used in thermometers because the change in volume for each degree of rise or fall in temperature is the same. The use of mercury in the thermometer instead of alcohol was done by Gabriel Daniel Fahrenheit in 1714. It was also used in vacuum pumps, barometers, and electric rectifiers and switches. Mercury is used in a mercury-vapor lamps which are used as a source of ultraviolet rays in homes and for sterilizing water. Mercury-vapor is also used instead of steam in the boilers of some turbine engines. Mercury is someti .....

.... large animals. es chase their prey. They wear them out in a long chase because they arenÕt very fast runners. Large animals are chased until the es can catch them or until the weaker ones drop back. es donÕt always get their prey, however kangaroos can lean back on their tails and kick hard enough to rip open a Õs stomach. The gestation period of the is about 63 days, and the litters average about 5 to 8 pups. After 2 weeks, the mother will throw up food for the pups to eat. After 3 weeks, both parents will bring food to the den. Prey around the den is left for the pups to practice .....

.... century; however, during that time it was not identified as this illness. Here is a statement from before the discovery of the illness: In 1799, a boy about eleven years of age was found naked in the woods of Averyron, France. He was dirty, covered with sores, mute, and behaved like A wild animal. Jean Itard, the physician of the new institution for deaf-mutes, Was given charge of the abandoned child. From Itard’s description, Victor Showed many features of autism—he did not look at people and never Played with the toys, but showed remarkable memory in recalling the position .....